package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private RedisTemplate redisTemplate;
    /**
     * 菜品新增
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        //清理所有菜品的缓存
        //Set keys = redisTemplate.keys("dish_*");//获取所有dish_开头的keys
        //redisTemplate.delete(keys);

        //清理某一个分类下的缓存
        String key = "dish_" + dishDto.getCategoryId() +"_1";
        redisTemplate.delete(key);


        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据ID查询菜品和菜品口味的信息
     */

    @GetMapping("/{id}")
    public R<DishDto> getById(@PathVariable long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        //清理所有菜品的缓存
        //Set keys = redisTemplate.keys("dish_*");//获取所有dish_开头的keys
        //redisTemplate.delete(keys);

        //清理某一个分类下的缓存
        String key = "dish_" + dishDto.getCategoryId() +"_1";
        redisTemplate.delete(key);

        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    /**
     * 删除和批量删除
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("ids:{}", ids);
        dishService.deleteWithFlavor(ids);
        return R.success("删除成功");
    }

    /**
     * 批量停售
     * @param ids
     * @return
     */
    @PostMapping("/status/0")
    public R<String> updateByIdNo(@RequestParam List<Long> ids) {
        for (long id : ids) {
            Dish dish = dishService.getById(id);
            dish.setStatus(0);
            dishService.updateById(dish);
        }

        return R.success("修改成功");

    }
    /**
     * 批量起售
     * @param ids
     * @return
     */
    @PostMapping("/status/1")
    public R<String> updateYes(@RequestParam List<Long> ids) {
//        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
//        lqw.in(Dish::getId,ids);
//        List<Dish> list = dishService.list(lqw);
//
        for (long id : ids) {
            Dish dish = dishService.getById(id);
            dish.setStatus(1);
            dishService.updateById(dish);
        }
        return R.success("修改成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
//        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
//        //查询状态为起售的1
//        queryWrapper.eq(Dish::getStatus,1);
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> list = dishService.list(queryWrapper);
//
//        return R.success(list);
//    }

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        List<DishDto> dishDtos = null;
                //构造一个key
        String key = "dish_" + dish.getCategoryId() + "_" + dish.getStatus();

        //从缓存中获取
        dishDtos = (List<DishDto>) redisTemplate.opsForValue().get(key);

        if (dishDtos != null){
            //如果存在直接返回,无需查数据库
            return R.success(dishDtos);
        }

        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
        //查询状态为起售的1
        queryWrapper.eq(Dish::getStatus,1);
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

          dishDtos = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
            lqw.eq(DishFlavor::getDishId,dishId);
            //口味集合
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lqw);

            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

          redisTemplate.opsForValue().set(key,dishDtos,60, TimeUnit.MINUTES); // 在缓存存60分钟

        return R.success(dishDtos);
    }

}































